CVE-2025-20357Network attack vector

Authenticated browser script execution via unsanitized Reports input

Published Oct 1, 2025 · Updated Oct 1, 2025

Stored XSS in Cisco Cyber Vision Center 5.1.0 through 5.2.1 allows remote authenticated users to execute scripts in a victim's browser. The Reports page stores insufficiently validated user input and later renders it as active script content in the affected web interface. Valid administrative credentials with Reports-page access are required, and a user must view the injected page; execution is limited to the interface context and browser-based information.

CVSS severity5.4
Medium
EPSS probability0.21%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Stored XSS in Cisco Cyber Vision Center 5.1.0 through 5.2.1 allows remote authenticated users to execute scripts in a victim's browser. The Reports page stores insufficiently validated user input and later renders it as active script content in the affected web interface. Valid administrative credentials with Reports-page access are required, and a user must view the injected page; execution is limited to the interface context and browser-based information.

The record

CVE
CVE-2025-20357
Published
Oct 1, 2025
Updated
Oct 1, 2025
Vendor
ClamAV
Product
Cisco Cyber Vision
Classifications
CWE-79
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Oct 1, 2025CVE publishedPublication date reported by the CVE source.
  2. Oct 1, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=5.1.0
  2. Affected versionversion=5.1.1
  3. Affected versionversion=5.1.2
  4. Affected versionversion=5.1.3
  5. Affected versionversion=5.2.0
  6. Affected versionversion=5.2.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

ClamAV · Cisco Cyber Visionversion=5.1.0; version=5.1.1; version=5.1.2; version=5.1.3; version=5.2.0; version=5.2.1

Published CVSS scores

5.4Cisco Systems, Inc.CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N/E:X/RL:X/RC:X

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo